CommScope Trunk & Distribution Cable - Manual (Page 13)

Testing CommScope Cables
While testing reels of CommScope cables after delivery is not required, testing prior to, during and after
construction will identify any degradation in the performance of the cable caused during installation.
There are three phases in CommScope cable testing:
1) Visual inspection for shipping damage
2) Pre-installation testing, which occurs immediately after delivery of the cable, and
3) Post-installation/final acceptance testing, which occurs just prior to activation.
Post-installation testing is accomplished as part of system activation and as proof of performance.
Broadband frequency response (sweep) testing is included as a part of the activation process.
Pre-Installation Testing
Pre-installation testing of CommScope cable typically consists of SRL and
impedance/TDR (Time Domain Reflectometer) tests, with the TDR test being
the quickest way to discover cable damage. These pre-installation checks can
be jointly conducted by the system operator and the construction group in
order to preclude future difficulties if a cable is damaged during construction.
Attenuation (insertion loss) tests are seldom conducted after shipment, but can
be easily performed during pre-installation testing. Testing for attenuation by
conventional methods is extremely difficult after installation due to the physical
placement of the cable over substantial distances.
Post Installation - Final Acceptance Testing
SRL and TDR tests can be performed after installation if required. The results should be compared to the
pre-installation test.
Every reel of
CommScope cable is
extensively tested
prior to shipment
for attenuation,
Structural Return
Loss (SRL) and
impedance with
certified test
reports available
at your request
Handling and Testing 2.4
Storing and Stacking Reels